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Finding the Fourth Proportional to 34,878.70, 48,132.40 and 19,774.22

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Solution

The fourth proportional to 34,878.70, 48,132.40 and 19,774.22 is: 27,288.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,878.70 : 48,132.40 = 19,774.22 : x
  2. Step 2: Convert to fraction form
    34,878.70/48,132.40 = 19,774.22/x
  3. Step 3: Cross multiply
    34,878.70x = 48,132.40 × 19,774.22
  4. Step 4: Simplify right side
    34,878.70x = 951,780,666.73
  5. Step 5: Solve for x
    x = 951,780,666.73/34,878.70
  6. Step 6: Final answer
    x = 27,288.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.